Finely chop the onion and garlic.
Cut chicken breast into bite-sized pieces.
Heat olive oil in a pan and sauté the garlic and onion.
Add the chicken breast and cook through.
Add rice and stir-fry for 1–2 minutes.
Mix in tomato sauce and heavy cream.
Gradually add chicken stock while stirring until the rice is cooked.
Add mozzarella cheese and stir until melted.
Season with salt and pepper.
Garnish with parsley.